A multi-plane adaptive-additive algorithm is developed for optimizing computer-generated holograms for the reconstruction of traps in three-dimensional (3D) spaces. This algorithm overcomes the converging stagnation problem of the traditional multi-plane Gerchberg-Saxton algorithm and improves the diffraction efficiency of the holograms effectively. The optimized holograms are applied in a holographic optical tweezers (HOT) platform. Additionally, a computer program is developed and integrated into the HOT platform for the purpose of achieving the interactive control of traps. Experiments demonstrate that the manipulation of micro-particles into the 3D structure with optimized holograms can be carried out effectively on the HOT platform.
© 2011 Chinese Optics Letters
Digital Holography and 3D Imaging 2011 (2011) Applied Optics
Tao Tao, Jing Li, Qian Long, and Xiaoping Wu, "3D trapping and manipulation of micro-particles using holographic optical tweezers with optimized computer-generated holograms," Chin. Opt. Lett. 9, 120010- (2011)